Calibration device of automobile assistance system

ABSTRACT

The present invention relates to the technical field of automobile maintenance and device calibration, and discloses a calibration device of an automobile assistance system, the radar calibration device including a support assembly, a beam assembly, and a sliding member. The beam assembly is mounted to the support assembly and may move relative to the support assembly along a vertical direction. The sliding member is mounted to the beam assembly and may move relative to the beam assembly along a horizontal direction. The calibration device of the automobile assistance system may cause a simulator to be mounted on the sliding member that may slide horizontally from left to right, so that the simulator can slide continuously from left to right, radar for blind areas at a left rear and a right rear of the automobile are conveniently and rapidly calibrated, and consistency of parameters such as a height and an angle of the calibration device of an automobile assistance system can be ensured, achieving a convenient and more accurate calibration operation.

CROSS-REFERENCE

The present application is a continuation-in-part of InternationalPatent Application No. PCT/2018/110099 filed on Oct. 12, 2018, whichclaims priority to Chinese Patent Application No. 201710985445.3 filedon Oct. 20, 2017, both of which are incorporated herein by reference intheir entireties.

BACKGROUND Technical Field

The present invention relates to the technical field of automobilemaintenance and device calibration, and in particular, to a calibrationdevice of an automobile assistance system.

Related Art

In the field of automobile maintenance, especially during calibrationfor advanced driver assistant systems (ADAS) mounted on an automobile, adevice in ADAS, such as a sensor for sensing environment like a cameraor radar, needs to be calibrated. For example, a radar that is on a leftrear and a right rear of the automobile and that is responsible fordetecting a blind area of a driver during lane changing needs to becalibrated. Mounting positions of apparatuses in ADAS mounted ondifferent vehicles between different automobile series or between sameautomobile series are different due to body widths, styling design, andmounting angles, etc., and therefore requirements for mounting distancesand angles of the calibration device are different.

During implementation of the present invention, the inventor finds thefollowing disadvantages in an existing calibration manner.

During calibration, the calibration device needs to be removed andmounted in order to achieve calibration of the ADAS device at differentpositions by the calibration device. This method is time-consuming andlabor-consuming, and affects consistency of the calibration device.

SUMMARY

In order to resolve the foregoing technical problems, embodiments of thepresent invention provide a calibration device of an automobileassistance system, which is easy to use and has relatively highcalibration precision.

In embodiments of the present invention, the technical problems areresolved using the following technical solutions.

A calibration device of an automobile assistance system includes asupport assembly, a beam assembly, and a sliding member. The beamassembly is mounted to the support assembly and may move relative to thesupport assembly along a vertical direction. The sliding member ismounted to the beam assembly and may move relative to the beam assemblyalong a horizontal direction. A calibration apparatus is mounted to thesliding member and is used to calibrate a device in an ADAS assistancesystem mounted to an automobile. When the calibration apparatus is usedto calibrate the device in the ADAS assistance system, a positionthereof is changed through the sliding member to calibrate a same ordifferent device in the ADAS assistance system.

Optionally, the support assembly includes a support body and a heightadjusting member. At least three height adjusting members are mounted toa bottom surface of the support body, which are configured to adjust anoverall horizontal angle of the support body and a pitch angle of thesupport body.

Optionally, there are three height adjusting members, and the threeheight adjusting members are distributed in an isosceles triangle. Thethree height adjusting members are configured to coordinately adjust theoverall horizontal angle of the support body, and the height adjustingmember located at a vertex position of a vertex angle of the isoscelestriangle is configured to adjust the pitch angle of the support body.

Optionally, the support assembly includes a base support and an uprightsupport. One end of the upright support is connected to the basesupport, the base support supporting the upright support. The beamassembly is mounted to the upright support. The base support includes aroller, the support body, and the height adjusting member. At leastthree rollers are mounted to a bottom surface of the support body tofacilitate movement of the base support.

Optionally, the upright support includes a lifting screw rod. Thelifting screw rod is disposed along a vertical direction. The beamassembly is sleeved on the lifting screw rod and is mated with thelifting screw rod through threads. When the lifting screw rod rotatesaround a central axis of the lifting screw rod, the lifting screw rod isconfigured to drive the beam assembly to move in a vertical directionalong the lifting screw rod.

Optionally, the upright support includes a lifting guide rail. Thelifting guide rail includes a vertical rod, the vertical rod beingdisposed along a vertical direction. The beam assembly is movablymounted to the vertical rod, the vertical rod being configured to guidethe beam assembly to move in a vertical direction.

Optionally, the lifting guide rail includes a horizontal rod, thehorizontal rod being mounted to the vertical rod along a horizontaldirection. One end of the lifting screw rod is mounted to the horizontalrod, and the other end of the lifting screw rod is mounted to thesupport body.

Optionally, the lifting guide rail includes a horizontal rod and abottom rod. The two vertical rods are disposed in parallel to each otherand spaced apart along a vertical direction. The horizontal rod isdisposed along a horizontal direction, both ends thereof beingrespectively mounted to the two vertical rods. The bottom rod is fixedlymounted to the support body, and one end that is of each of the verticalrods and that is far away from the horizontal rod is fixedly mounted tothe bottom rod. One end of the lifting screw rod is fixedly mounted tothe horizontal rod, and the other end of the lifting screw rod isfixedly mounted to the bottom rod.

Optionally, the upright support includes a height gauge. The heightgauge is mounted to the vertical rod along a vertical direction, and isconfigured to measure a distance by which the beam assembly moves alonga vertical direction.

Optionally, the beam assembly includes a supporting member and a guiderail. The supporting member includes a supporting body and a movableblock. The movable block is fixedly mounted to the supporting body andsleeved on the lifting screw rod, the movable block being mated with thelifting screw rod through threads. The guide rail is fixedly mounted tothe supporting body along a horizontal direction. The sliding member ismovably mounted to the guide rail and may move in a horizontal directionalong the guide rail.

Optionally, the upright support includes a vertical rod, the verticalrod being disposed along a vertical direction. The supporting memberincludes a sliding block. The sliding block is fixedly mounted to thesupporting body, and the sliding block is movably mounted to thevertical rod and may slide along the vertical rod.

Optionally, two clamping portions respectively extend from two oppositesides of the supporting body. The two clamping portions are elongatedstrip-shaped and are disposed in parallel to each other and spaced apartalong a horizontal direction. The two guide rails are correspondinglymounted to the two clamping portions, respectively, and are spaced apartby a preset distance and disposed in parallel to each other along ahorizontal direction. The sliding member is movably mounted to the guiderail through a sliding bearing.

Optionally, the beam assembly includes a horizontal gradienter, thehorizontal gradienter being configured to detect whether the guide railis horizontally disposed.

Optionally, on each of both sides of the guide rail, there is ahorizontal scale that uses a center of the guide rail as a zero point.The horizontal scales respectively extend along both sides of the guiderail, to facilitate positioning of a location of the sliding member.

Optionally, the calibration apparatus (40) includes any one of thefollowing: a Doppler signal simulator, a calibration target, areflecting mirror, and a night vision signal simulator, etc.

In the calibration device of the automobile assistance system accordingto the embodiments of the present invention, the beam assembly may moverelative to the support assembly along a vertical direction, and thesliding member may move relative to the beam assembly along a horizontaldirection, to cause the calibration apparatus to be mounted on thesliding member that may slide from left to right, so that thecalibration apparatus may slide continuously from left to right, so thatthe same or different apparatus in ADAS may be conveniently and rapidlycalibrated, making calibration convenient and more accurate.

BRIEF DESCRIPTION OF THE DRAWINGS

One or more embodiments are described by way of example with referenceto the corresponding accompanying drawings, and the descriptions are notto be construed as limiting the embodiments. Elements in theaccompanying drawings that have same reference numerals are representedas similar elements, and unless otherwise particularly stated, thefigures in the accompanying drawings are not drawn to scale.

FIG. 1 is a three-dimensional view of a calibration device of anautomobile assistance system according to an embodiment of the presentinvention;

FIG. 2 is a three-dimensional view of the calibration device of theautomobile assistance system shown in FIG. 1 from another perspective;

FIG. 3 is a front view of the calibration device of the automobileassistance system shown in FIG. 2; and

FIG. 4 is a schematic diagram of calibrating a radar for a blind area ofan automobile by the calibration device of the automobile assistancesystem shown in FIG. 1.

DETAILED DESCRIPTION

For ease of understanding the present invention, the present inventionis described in further detail below with reference to the accompanyingdrawings and specific embodiments. It should be noted that an elementdescribed as being “fixed” to another element may be directly on theother element, or one or more intervening components may be presenttherebetween. An element described as being “connected” or “attached” toanother element may be directly connected or attached to the otherelement, or one or more intervening components may be presenttherebetween. When an element is directly “connected” or “attached” toanother element, the element can be connected to another element by afastener (such as a screw) or by molding. In the case of molding, thetwo elements are molded into one piece. Similarly, an element describedas being “mount” to another element may be directly mounted to the otherelement, or one or more intervening components may be present. Anelement can be mounted to another element by a fastener (such as ascrew) or by molding or welding. The terms “vertical”, “horizontal”,“left”, “right”, “inside”, “outside”, and similar expressions, such as“first” and “second”, as used in this specification, are for the purposeof description only.

Unless otherwise defined, all technical and scientific terms used hereinhave the same meaning as commonly understood by one of ordinary skill inthe art to which the present invention belongs. In this specification,terms used in the specification of the present invention are merelyintended to describe objectives of the specific embodiments, but are notintended to limit the present invention. As used herein, the term“and/or” includes any and all combinations of one or more related itemslisted.

In addition, the technical features provided in different embodiments ofthe present invention to be described below may be combined with eachother as long as no conflict occurs.

Referring to FIG. 1, a calibration device 100 of an automobileassistance system according to an embodiment of the present inventionincludes a support assembly 10, a beam assembly 20, a sliding member 30,and a calibration apparatus 40. The beam assembly 20 is mounted to thesupport assembly 10 and may move relative to the support assembly 10along a vertical direction. The sliding member 30 is mounted to the beamassembly 20 and may move relative to the beam assembly 20 along ahorizontal direction. The calibration apparatus 40 is mounted to thesliding member 30 and may move together with the sliding member 30relative to the beam assembly 20 along a horizontal direction. Thecalibration apparatus 40 may include apparatuses such as a Dopplersignal simulator, a calibration target, a reflecting mirror, and a nightvision signal simulator. Different calibration apparatuses may be usedto calibrate different apparatuses in ADAS. For example, the Dopplersignal simulator is used to simulate signals generated by a rearvehicle, and then used to calibrate a blind-area radar mounted to a leftrear and a right rear of the vehicle, where the blind-area radar isapplied to a blind spot detection system in ADAS. The calibration targetis used to calibrate a camera mounted to the vehicle, such as a cameraused to calibrate a lane keeping system. The reflecting mirror may beused to calibrate a distance sensor in an adaptive cruise system. Thenight vision signal simulator may be used to send out a thermal signalto calibrate a sensor in the night vision system. Through application ofthe calibration device 100 of the automobile assistance system in theembodiment of the present application, a calibration position may beflexibly adjusted to achieve a calibration effect when the calibrationapparatus is used to calibrate a sensor in the ADAS. Alternatively, thecalibration apparatus may be used to calibrate a plurality of sensors inthe ADAS, such as calibration of the blind-area radar located at a leftrear and a right rear of the vehicle, so that consistency of thecalibration may be ensured, improving accuracy of the calibration.

The support assembly 10 includes a base support 11 and an uprightsupport 12. One end of the upright support 12 is connected to the basesupport 11, and the base support 11 supports the upright support 12.

Referring to both FIG. 2 and FIG. 3, the base support 11 includes asupport body 110, a roller 112, and a height adjusting member 114. Thesupport body 110 is a rectangular plate and may be made of a metalmaterial. In order to reduce a weight, a plurality of hollow-out areasis formed. The support body 110 includes a bottom surface 1100 and anupper surface 1102 that are oppositely disposed. The support body 110has a central axis O1.

The roller 112 is mounted to the bottom surface 1100 for facilitatingmovement of the base support 11. In an embodiment, the roller 112 is anomni-directional moving roller, so that the base support 11 can movetoward any direction. There are four rollers 112, which are respectivelymounted to four corners of the support body 110. It may be understoodthat, in some other embodiments, a shape of the support body 110 mayvary according to an actual demand, and is not limited to a rectangle.For example, the support body 110 may be a circle. The number of rollers112 may be increased or decreased according to an actual demand, as longas it can be ensured that there are at least three rollers.

The height adjusting member 114 is mounted to the bottom surface 1100for adjusting a height of the support body 110. In an embodiment, theheight adjusting member 114 is an adjusting hand wheel, and there arethree adjusting hand wheels. For example, as shown in FIG. 2, the heightadjusting member 114 includes an adjustment screw. The three adjustinghand wheels 114 are distributed in an isosceles triangle. Two adjustinghand wheels 114 located at a bottom edge of the isosceles triangle aredisposed on one side of the support body 110, and are symmetricallydisposed along the central axis O1 of the support body 110. The otheradjusting hand wheel 114 is disposed on the other side of the supportbody 110, and is disposed on the central axis O1 of the support body 110(that is, disposed at a vertex position of a vertex angle of theisosceles triangle). The three adjusting hand wheels 114 may be mated toadjust an overall horizontal angle of the support body 110. Theadjusting hand wheel 114 located on the central axis O1 of the supportbody 110 is adjusted independently, so that a pitch angle of the supportbody 110 can be adjusted.

It may be understood that the height adjusting member 114 may be otherapparatuses that may adjust a height. The number of height adjustingmembers 114 may be increased or decreased according to an actual demandas long as there are at least three height adjusting members 114.

The upright support 12 includes a lifting guide rail 120, a liftingscrew rod 122, and a height gauge 126. In an embodiment, the uprightsupport 12 may further includes a lifting crank handle 124.

The lifting guide rail 120 is mounted to the support body 110. Thelifting guide rail 120 includes a vertical rod 1200, a horizontal rod1202, and a bottom rod 1204. The two vertical rods 1200 are disposed inparallel along a vertical direction and spaced apart from each other.The two vertical rods 1200 are configured to guide the beam assembly 20to move along a vertical direction. In the embodiment, the two verticalrods are two vertical guide rails configured to guide the beam assembly20 to move along a vertical direction. The vertical rod can be a singlerod that is used as a guide rail. Alternatively, the vertical rod is acomponent including a guide rail or a rod.

The horizontal rod 1202 is disposed along a horizontal direction, bothends thereof being respectively mounted to the two vertical rods 1200.The bottom rod 1204 is fixedly mounted to the support body 110. One endthat is of each of the vertical rods 1200 and that is far away from thehorizontal rod 1202 is fixedly mounted to the bottom rod 1204.

It should be noted that the shape of the horizontal rod 1202 and thebottom rod 1204 is not limited in the application. For example, thehorizontal rod 1202 may be rod-shaped or plate-shaped. Similarly, thebottom rod 1204 may be rod-shaped or plate-shaped.

It may be understood that, in some other embodiments, the number ofvertical rods 1200 may be increased or decreased according to an actualdemand. For example, there may be one or three vertical rods 1200.

The lifting screw rod 122 is mounted to the lifting guide rail 120 alonga vertical direction. The lifting screw rod 122 is configured to rotaterelative to the lifting guide rail 120. One end of the lifting screw rod122 is mounted to the horizontal rod 1202, and the other end of thelifting screw rod 122 is mounted to the bottom rod 1204. In anembodiment, the lifting screw rod 112 is rotatably mounted to thelifting guide rail 120. For example, the lifting screw rod 112 can bemounted to the lifting guide rail 120 through a bearing. In some otherembodiments, a first part of the lifting screw rod 112 is fixedlymounted to the lifting guide rail 120, and a second part of the liftingscrew rod 112 is rotatable relative to the first part of the liftingscrew rod 112. The second part of the lifting screw rod 112 is attachedto a supporting member 200 and is rotatably attached to the first partof the lifting screw rod 112.

It may be understood that, in some other embodiments, the bottom rod1204 may be omitted. One end that is of each of the vertical rods 1200and that is far away from the horizontal rod 1202 is fixedly mounted tothe support body 110. The lifting screw rod 122 is mounted to thelifting guide rail 120 along a vertical direction. One end of thelifting screw rod 122 is mounted to the horizontal rod 1202, and theother end of the lifting screw rod 122 is mounted to the support body110.

The lifting crank handle 124 is mounted to the horizontal rod 1202, andis connected to the lifting screw rod 122. When the lifting crank handle124 rotates, the lifting screw rod 122 is driven to rotate around acentral axis of the lifting screw rod 122. In an embodiment, aconnecting rod of the lifting crank handle 124 is perpendicular to thelifting screw rod 122, and is connected to the lifting screw rod 122through a gear structure. It may be understood that, in some otherembodiments, the connecting rod of the lifting crank handle 124 may becoaxial with the lifting screw rod 122, and the connecting rod of thelifting crank handle 124 is directly connected to the lifting screw rod122. The lifting crank handle 124 is configured to manually rotate thelifting screw rod 122. Alternatively, the lifting crank handle 124 maybe replaced with other apparatuses such as a motor for driving thelifting screw rod 122 to rotate. In an embodiment, a power adaptor isprovided, and the motor is a direct current (DC) motor. One end of thepower adaptor is connected to a DC port of the motor, and the other endof the power adaptor is connected to an alternating current (AC) port.In some embodiments, the motor is an AC motor. With the help of themotor, the lifting screw rod 122 can be rotated automatically. In someother embodiments, the calibration device can include both a liftingcrank handle 124 and a motor.

The height gauge 126 is mounted to the vertical rod 1200 along avertical direction. The height gauge 126 has scales, which areconfigured to measure a distance by which the beam assembly 20 movesalong a vertical direction.

In an embodiment, the upright support 12 further includes a handle. Forexample, as shown in FIG. 1, the upright support 12 includes a pair ofhandles. The number of handle is not limited in the application. In anembodiment, there is only one handle. In some other embodiments, thereare three or four handles.

Referring to both FIG. 1 and FIG. 2, the beam assembly 20 includes asupporting member 200, a guide rail 202, and a gradienter 204. Thesupporting member 200 is mounted to the lifting guide rail 120. Underguidance of the lifting guide rail 120, the supporting member 200 maymove relative to the lifting guide rail 120 along a vertical direction.The guide rail 202 is fixedly mounted to the supporting member 200 andmay move together with the supporting member 200 relative to the liftingguide rail 120 along a vertical direction. In an embodiment, the guiderail 202 may be formed by grooving a crossbeam of the beam assembly 20.In some other embodiments, the guide rail 202 is a separate componentand is mounted to the crossbeam of the beam assembly 20. A slidingmember 30 is mounted to the guide rail 202 and may move relative to theguide rail 202 along a horizontal direction.

The supporting member 200 includes a supporting body 2002, a movableblock 2004, and a sliding block 2006.

The supporting body 2002 is substantially plate-shaped. Two clampingportions 2008 respectively extend from two opposite sides of thesupporting body. The two clamping portions 2008 are elongatedstrip-shaped and are disposed in parallel to each other and spaced apartalong a horizontal direction. In some embodiments, only one elongatedstrip-shaped clamping portion 2008 is provided. The one clamping portionextends from a lower side of the supporting body 2002 or is mounted to alower side of the supporting body 2002. The clamping portion(s) is/areprovided so that the guide rail 202 can be mounted easily.

The movable block 2004 is fixedly mounted to the supporting body 2002and is sleeved on the lifting screw rod 122. The movable block 2004 ismated with the lifting screw rod 122 through threads. When the liftingscrew rod 122 rotates around the central axis thereof, the movable block2004 may be driven to move in a vertical direction along the liftingscrew rod 122, thereby driving the beam assembly 20 to move along avertical direction. The movable block 2004 and the clamping portion 2008are respectively located on two opposite sides of the supporting body2002. That is, the guide rail 202 and the movable block 2004 are locatedon two opposite sides of the supporting body 2002.

The sliding block 2006 is fixedly mounted to the supporting body 2002,and is located on a same side of the supporting body 2002 as the movableblock 2004. At least one sliding block 2006 is correspondingly mountedto each of the vertical rods 1200. Each of the sliding blocks 2006 ismovably mounted to a vertical rod 1200 corresponding to the slidingblock 2006, and may slide along the vertical rod 1200 corresponding tothe sliding block 2006. In an embodiment, two of the sliding blocks 2006are correspondingly mounted to each of the vertical rods 1200. It may beunderstood that, in some other embodiments, the number of sliding blocks2006 correspondingly mounted to each of the vertical rods 1200 may beincreased or decreased according to an actual demand. For example, thenumber of the sliding blocks may be decreased to one or increased tothree.

As shown in FIG. 1, the movable block 2004 is mounted on a middle partof the supporting body 2002. The sliding blocks 2006 are located on bothends of the supporting body 2002. The movable block 2004 is locatedbetween the sliding block(s) mounted to one of the two vertical rods1200 and the sliding block(s) mounted to another of the two verticalrods 1200.

The two guide rails 202 are correspondingly mounted to the two clampingportions 2008 respectively, and are spaced apart by a preset distanceand disposed in parallel to each other along a horizontal direction. Oneach of both sides of the guide rail 202, there is a horizontal scalethat uses a center of the guide rail as a zero point. The horizontalscales extend toward both sides respectively, so as to facilitatepositioning of a location of the sliding member 30. As shown in FIG. 3,there are two sides on the guide rail 202, left side and a right side.The two sides are on a same plane. In an embodiment, the left side andthe right side take the center of the guide rail 202 as a boundary. Onehorizontal scale is disposed on the left side of the guide rail 202, andanother horizontal scale is disposed on the right side of the guide rail202. In an embodiment, the horizontal scale disposed on the left side isa mirror of the horizontal scale disposed on the right side. In someembodiments, the two horizontal scales can be respectively disposed ontwo ends of the guide rails.

In an embodiment, the horizontal scale disposed on the left side isspaced apart from the horizontal scale disposed on the right side. Insome other embodiments, there is no space between the horizontal scaledisposed on the left side and the horizontal scale disposed on the rightside. The horizontal scale disposed on the left side is connected to thehorizontal scale disposed on the right side.

A central axis O2 of the guide rail 202 and the central axis O1 of thesupport body 110 are on a same plane. It may be understood that, in someother embodiments, the number of the guide rails 202 may be increased ordecreased according to an actual demand, for example, decreased to oneor increased to three. The guide rail 202 may also be fixedly mounted tothe supporting member 200 in any other appropriate manner. For example,the clamping portion 2008 is omitted, and the guide rail 202 is directlywelded to the supporting body 2002.

The gradienter 204 is mounted to an upper side of the clamping portion2008 for detecting whether the clamping portion 2008 is horizontallydisposed, thereby determining whether the guide rail 202 is horizontallydisposed. It may be understood that, in some other embodiments, thegradienter 204 may also be mounted to the guide rail 202 or mounted toother portions of the beam assembly 20, such as a calibration pattern,as long as the gradienter can be configured to detect whether the guiderail 202 is horizontally disposed.

The sliding member 30 is movably mounted to the guide rail 202 and maymove in a horizontal direction along the guide rail 202. In anembodiment, the sliding member 30 is movably mounted to the guide rail202 through a sliding bearing 302. The sliding member 30 includesseveral mount points for mounting the calibration apparatus 40. It maybe understood that, in some other embodiments, the sliding member 30 maybe movably mounted to the guide rail 202 in other appropriate manners.For example, the sliding bearing 302 is omitted, and the sliding member30 is directly mounted to the guide rail 202.

The calibration apparatus 40 is mounted to a mounting point and is usedto calibrate a sensor in the ADAS system. For example, the calibrationapparatus 40 may be a Doppler signal simulator 40 that specificallysimulates other automobiles on the left rear or right rear of theto-be-calibrated automobile, further implementing calibration.

A method for calibrating a vehicle through application of thecalibration device 100 of the automobile assistance system according tothe embodiment of the present application is described below with acalibration apparatus as a Doppler signal simulator.

Referring to FIG. 4, before calibration, the calibration device 100 ofthe automobile assistance system is moved to a rear of ato-be-calibrated automobile 300. Based on a distance required tocalibrate different automobile models, a distance between the Dopplersignal simulator 40 and the automobile 300 is L1. A central axis O2 ofthe guide rail 202 is aligned with a central axis O3 of theto-be-calibrated automobile, that is, the central axis O2 and thecentral axis O3 are on a same plane. The three height adjusting members114 are unscrewed to cause the rollers 112 to be separated from theground, so that the support assembly 10 can be stably fixed to the rearof the to-be-calibrated automobile 300, while the support body 110 islevelled through the gradienter 204 to cause the guide rail 202 to behorizontally disposed.

The sliding member 30 equipped with the Doppler signal simulator 40 ismoved along the guide rail 202, so that the Doppler signal simulator 40moves to one side of the guide rail 202, and a distance between theDoppler signal simulator 40 and the central axis O3 of theto-be-calibrated automobile 300 is L2. Afterwards, a height of the guiderail 202 is adjusted through the lifting crank handle 124 and thelifting guide rail 120, so that the Doppler signal simulator 40 reachesa height required for calibration. As a result, adjustment of theposition of the calibration device 100 of the automobile assistancesystem is completed.

When calibration of the radar for the blind area is performed, accordingto a real-time value read by a calibration instrument, the adjustmenthand wheel 114 located on the central axis O1 of the support body 110may be adjusted to perform fine adjustment on the pitch angle of thecalibration device 100 of the automobile assistance system, tocompensate for an angle error between a horizontal plane on which theautomobile 300 is located and a horizontal plane on which thecalibration device 100 of the automobile assistance system, so that thecalibration instrument acquires an optimal calibration value andcompletes calibration of a radar for a blind area on a side of theto-be-calibrated automobile 300.

The Doppler signal simulator 40 is moved to the other side of the guiderail 202, and a distance between the Doppler signal simulator 40 and thecentral axis O3 of the to-be-calibrated automobile 300 is L2, andtherefore adjustment of a position of the calibration device 100 of theto-be-calibrated automobile assistance system is completed. Thecalibration instrument is used to read the value, and calibrationperformed on the radar for the blind area on the other side of theautomobile 300 is completed.

Through the calibration device 100 of the automobile assistance systemof the embodiments of the present invention, the central axis O3 of theautomobile 300 is used as the reference axis, and an uncontrollableerror caused by using the horizontal plane as the reference plane can beavoided. In this case, the Doppler signal simulator 40 is mounted to thesliding member 30 that may slide from left to right, so that the Dopplersignal simulator 40 can slide continuously from left to right, the radarfor the blind areas at a left rear and a right rear of the automobile300 are conveniently and rapidly calibrated, and consistency ofparameters such as the height and the angle of the calibration device100 of the automobile assistance system is ensured, achieving a moreaccurate calibration operation.

In addition, the angle error between the horizontal plane on which theautomobile 300 is located and the horizontal plane on which thecalibration device 100 of the automobile assistance system may beadjusted through the height adjusting member 114, so that thecalibration precision is more accurate.

It should be finally noted that the above embodiments are merelyintended for describing the technical solutions of the present inventionrather than limiting the present invention. Based on the idea of thepresent invention, the technical features in the foregoing embodimentsor different embodiments may be combined, the steps may be implementedin any order, and many other changes in the different aspects of thepresent invention as described above may exist. For brevity, suchchanges are not provided in the detailed descriptions. Although thepresent invention is described in detail with reference to the foregoingembodiments, those of ordinary skill in the art should understand thatthey can still make modifications to the technical solutions describedin the foregoing embodiments or make equivalent substitutions to sometechnical features thereof, without departing from scope of thetechnical solutions of the embodiments of the present invention.

What is claimed is:
 1. A calibration device, comprising: a base support;an upright support mounted on the base support, the upright supportcomprising: a lifting guide rail comprising two vertical guide rails,the two vertical guide rails being disposed in parallel in a verticaldirection and spaced apart from each other; and a lifting screw roddisposed in the vertical direction; a motor configured to drive thelifting screw rod to rotate; a beam assembly mounted to the liftingguide rail and configured to move relative to the lifting guide railalong the vertical direction, the beam assembly comprising: a supportingmember, the supporting member comprising: a supporting body; a movableblock fixedly attached to the supporting body, wherein the movable blockis mated with the lifting screw rod through threads, the lifting screwrod being configured to drive the movable block to move in the verticaldirection when the lifting screw rod rotates; a first sliding blockfixedly attached to the supporting body and movably mounted to a firstvertical guide rail of the two vertical guide rails, the first slidingblock being configured to slide along the first vertical guide rail; anda second sliding block fixedly attached to the supporting body andmovably mounted to a second vertical guide rail of the two verticalguide rails, the second sliding block being configured to slide alongthe second vertical guide rail; and a horizontal guide rail configuredto be mounted to the supporting body along a horizontal direction; and ahorizontal scale disposed on each of two sides of the horizontal guiderail.
 2. The calibration device according to claim 1, wherein themovable block, the first sliding block and the second sliding block aredisposed on a same side of the supporting body; and wherein the movableblock and the horizontal guide rail are respectively disposed on twoopposite sides of the supporting body.
 3. The calibration deviceaccording to claim 1, wherein the upright support further comprises acrank handle configured to manually rotate the lifting screw rod.
 4. Thecalibration device according to claim 1, wherein the upright supportfurther comprises a height gauge configured to measure a distance bywhich the beam assembly moves along the vertical direction.
 5. Thecalibration device according to claim 1, wherein the lifting guide railcomprises a horizontal rod disposed in the horizontal direction, one endof the horizontal rod being attached to the first vertical guide railand another end of the horizontal rod being attached to the secondvertical guide rail.
 6. The calibration device according to claim 5,wherein one end of the lifting screw rod is mounted to the horizontalrod.
 7. The calibration device according to claim 5, wherein the uprightsupport further comprises a crank handle configured to manually rotatethe lifting screw rod, the crank handle being mounted to the horizontalrod.
 8. The calibration device according to claim 1, wherein the uprightsupport comprises a handle.
 9. The calibration device according to claim1, wherein each of the first sliding block and the second sliding blockcomprises two sliding blocks.
 10. The calibration device according toclaim 1, wherein the movable block is disposed on a middle part of thesupporting body; the first sliding block and the second sliding blockbeing respectively disposed on both ends of the supporting body.
 11. Thecalibration device according to claim 1, wherein the supporting body isplate-shaped; wherein the supporting member comprises a clamping portionattached to the supporting body, the clamping portion being elongatedstrip-shaped.
 12. The calibration device according to claim 1, furthercomprising: a gradienter configured to detect whether the horizontalguide rail is horizontally disposed.
 13. The calibration deviceaccording to claim 1, further comprising: a sliding member movablemounted to the horizontal guide rail, wherein the sliding member isconfigured to move in the horizontal direction along the horizontalguide rail.
 14. A calibration device, comprising: a base support; anupright support mounted on the base support; a beam assembly mounted tothe upright support and configured to move relative to the uprightsupport along a vertical direction, wherein the beam assembly comprisesa horizontal guide rail; and a horizontal scale disposed on each of twosides of the horizontal guide rail; wherein the upright supportcomprises a lifting screw rod disposed in the vertical direction, thelifting screw rod being configured to drive the beam assembly to movealong the vertical direction; wherein the upright support comprises alifting guide rail disposed in the vertical direction, and the liftingguide rail comprises two vertical guide rails, the two vertical guiderails being disposed in parallel in the vertical direction and spacedapart from each other; wherein the lifting guide rail comprises ahorizontal rod disposed in the horizontal direction, both ends of thehorizontal rod being respectively attached to the two vertical guiderails; wherein one end of the lifting screw rod is mounted to thehorizontal rod; and wherein the lifting guide rail comprises a bottom,rod, an end that is of each of the two vertical guide rails and that sfar away from the horizontal rod being fixedly attached to the bottomrod, the other end of the lifting screw rod being mounted to the bottomrod.
 15. The calibration device according to claim 14, furthercomprising a motor configured to drive the lifting screw rod to rotate.16. The calibration device according to claim 14, wherein the uprightsupport further comprises a crank handle configured to manually rotatethe lifting screw rod.
 17. The calibration device according to claim 14,wherein the beam assembly comprises a supporting member, the supportingmember comprising: a supporting body; a movable block fixedly attachedto a first side of the supporting body, wherein the movable block ismated with the lifting screw rod through threads, the lifting screw rodbeing configured to drive the movable block to move in the verticaldirection when the lifting screw rod rotates; a first sliding blockfixedly attached to the first side of the supporting body and movablymounted to a first vertical guide rail of the two vertical guide rails,the first sliding block being configured to slide along the firstvertical guide rail; and a second sliding block fixedly attached to thefirst side of the supporting body and movably mounted to a secondvertical guide rail of the two vertical guide rails, the second slidingblock being configured to slide along the second vertical guide rail;wherein the horizontal guide rail is configured to be mounted to asecond side of the supporting body along the horizontal direction. 18.The calibration device according to claim 17, wherein each of the firstsliding block and the second sliding block comprises two sliding blocks.19. The calibration device according to claim 17, wherein the movableblock is disposed on a middle part of the supporting body; the firstsliding block and the second sliding block being respectively disposedon both ends of the supporting body.
 20. The calibration deviceaccording to claim 17, wherein the supporting body is plate-shaped;wherein the supporting member comprises a clamping portion attached tothe supporting body, the clamping portion being elongated strip-shaped.21. The calibration device according to claim 17, wherein the secondside of the supporting body is opposite the first side of the supportingbody.
 22. The calibration device according to claim 14, wherein theupright support further comprises a crank handle configured to manuallyrotate the lifting screw rod, the crank handle being mounted to thehorizontal rod.
 23. The calibration device according to claim 14,wherein the upright support further comprises a height gauge configuredto measure a distance by which the beam assembly moves along thevertical direction.
 24. The calibration device according to claim 14,wherein the upright support comprises a handle.
 25. The calibrationdevice according to claim 14, further comprising: a gradienterconfigured to detect whether the horizontal guide rail is horizontallydisposed.